SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1015 AM CST Mon Nov 16 2020 Valid 161630Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected across the contiguous U.S. through tonight. ...South FL... Isolated showers currently east-southeast of the Space Coast should increase in coverage as they spread southwestward along/ahead of a weakly convergent cold front pushing south from central FL. Rather poor 700-500 mb lapse rates between 4-5 C/km as sampled by regional 12Z soundings will be a limiting factor to sustaining charge separation, but adequate buoyancy exists for a risk of isolated thunderstorms. ...Coastal WA... A pronounced low-level warm advection regime will shift north from the Columbia Valley today. Scant elevated buoyancy may develop as 850-mb dew points rise to around 9 C this afternoon. Very isolated lightning could accompany deeper showers through early evening. ..Grams.. 11/16/2020
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